World Tour/Holland–Hein’s place

A group inspecting a bright yellow Div. 6 daffodil that really stood out in Hein Meeuwissen’s field–I have a note that it is one of Carlos Van der Veek’s seedlings.  Some of them were double-headed and I’d be interested in the name. 

Left to right (I hope I have all the IDs correct):
Jan Pennings with Hein’s wife (first name?), Hein, Brian Duncan (leaning down getting a closer look), Rod Armstrong, Len and Barbara Weber, and Dianne Mrak.